JPH0468103B2 - - Google Patents
Info
- Publication number
- JPH0468103B2 JPH0468103B2 JP59105387A JP10538784A JPH0468103B2 JP H0468103 B2 JPH0468103 B2 JP H0468103B2 JP 59105387 A JP59105387 A JP 59105387A JP 10538784 A JP10538784 A JP 10538784A JP H0468103 B2 JPH0468103 B2 JP H0468103B2
- Authority
- JP
- Japan
- Prior art keywords
- grinding
- grinding wheel
- reference member
- grindstone
- axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 10
- 238000012545 processing Methods 0.000 description 8
- 238000012937 correction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Landscapes
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
本発明は数値制御研削盤における砥石径測定装
置、詳しくは主軸軸線と平行な第１研削面とこれ
と直交する第２研削面とを有し回転軸線が主軸軸
線に対して斜交するアンギユラ砥石車を砥石台に
軸承した数値制御研削盤における砥石径測定装置
に関するものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a grinding wheel diameter measuring device for a numerically controlled grinding machine, and more specifically, to a grinding wheel diameter measuring device for a numerically controlled grinding machine. The present invention relates to a grinding wheel diameter measuring device for a numerically controlled grinding machine in which an angular grinding wheel whose rotational axis intersects obliquely with the spindle axis is supported on a grinding wheel head.
＜従来技術＞
近年の数値制御研削盤においては、砥石径をメ
モリ内に記憶するとともに、この砥石径のデータ
を砥石修正の度に変更して現実の砥石径に一致さ
せ、この記憶された砥石径に基づいて砥石寿命の
判定等を行うようにしており、かかる数値制御研
削盤においは砥石交換時において新たに装着した
砥石車の砥石径をメモリに記憶させる必要があ
る。<Prior art> In recent numerically controlled grinding machines, the diameter of the grinding wheel is stored in memory, and the data on this grinding wheel diameter is changed every time the grinding wheel is corrected to match the actual diameter of the grinding wheel. The life of the grinding wheel is determined based on the diameter, and when replacing the grinding wheel in such a numerically controlled grinding machine, it is necessary to store the diameter of the newly installed grinding wheel in the memory.
このため、従来においは、砥石交換時において
新たに装着した砥石車の直径を手作業によつて測
定し、これをメモリに記憶させていた。 For this reason, conventionally, when replacing a grinding wheel, the diameter of a newly installed grinding wheel was manually measured and stored in a memory.
＜発明が解決しようとする問題点＞
しかしながら、かかる従来の方式では、砥石交
換の度に砥石径を手作業で測定しなければならな
いため、作業性が悪い問題があつた。<Problems to be Solved by the Invention> However, in this conventional method, the diameter of the grinding wheel must be manually measured every time the grinding wheel is replaced, resulting in a problem of poor workability.
円筒形の砥石車では、研削面が砥石車軸線と平
行であるため、砥石車研削面の位置から砥石車の
径を自動測定することが可能であるが、砥石車が
アンギユラ形である場合には、砥石車軸線と研削
面が斜交している上、頂部の位置も砥石車によつ
て異なるため、砥石径の自動測定が困難であつ
た。 With a cylindrical grinding wheel, the grinding surface is parallel to the grinding wheel axis, so it is possible to automatically measure the diameter of the grinding wheel from the position of the grinding surface. However, since the grinding wheel axis and the grinding surface are oblique, and the position of the top varies depending on the grinding wheel, automatic measurement of the grinding wheel diameter is difficult.
＜問題点を解決するための手段＞
第１図は本発明を明示するための全体構成図で
ある。本発明は、主軸軸線Osと平行な第１研削
面Gaとこれと直交する第２研削面Gbとを有し回
転軸線が主軸軸線Osに対して斜交するアンギユ
ラ砥石車Ｇを砥石台２に軸承し、この砥石台２の
前記主軸軸線Osと交差する第１軸方向の移動と
工作物テーブル１の前記主軸軸線Osと平行な第
２軸方向の移動によつて工作物加工を行う数値制
御研削盤において、前記第１研削面Gaおよび第
２研削面Gbの係合可能な基準部材Ｓを前記工作
物テーブル１上に配設するとともに、前記工作物
テーブル１と砥石台２との間の相対移動により前
記第１、第２研削面Ga，Gbを前記基準部材Ｓに
それぞれ当接させる当接手段３と、前記第１研削
面Gaが前記基準部材Ｓに当接した時における前
記基準部材Ｓと前記砥石台２の回転軸線上の基準
点との前記第１軸方向の相対位置を検出する第１
位置検出手段４と、前記第２研削面Gbが前記基
準部材Ｓに当接した時における前記基準部材Ｓと
前記砥石台２の回転軸線上の基準点との前記第２
軸方向の相対位置を検出する第２位置検出手段６
と、前記第１、第２位置検出手段４，６によつて
検出された前記砥石台２と前記基準部材Ｓの相対
位置の情報に基づいて前記砥石車Ｇの頂部におけ
る径寸法WDを演算して出力する砥石径演算手段
５とを設けたものである。<Means for Solving the Problems> FIG. 1 is an overall configuration diagram for clearly demonstrating the present invention. The present invention provides an angular grinding wheel G having a first grinding surface Ga parallel to the spindle axis Os and a second grinding surface Gb orthogonal thereto, the rotational axis of which intersects obliquely with the spindle axis Os, on a grinding wheel head 2. Numerical control that processes a workpiece by moving the grindstone head 2 in a first axis direction intersecting the spindle axis Os and moving the workpiece table 1 in a second axis direction parallel to the spindle axis Os. In the grinding machine, a reference member S that can be engaged with the first grinding surface Ga and the second grinding surface Gb is arranged on the workpiece table 1, and a reference member S between the workpiece table 1 and the grindstone head 2 is provided. contact means 3 for bringing the first and second ground surfaces Ga and Gb into contact with the reference member S, respectively, by relative movement; and the reference member when the first grinding surface Ga contacts the reference member S. A first detecting device for detecting a relative position between S and a reference point on the rotation axis of the grindstone head 2 in the first axis direction.
position detection means 4 and the second position between the reference member S and the reference point on the rotation axis of the grindstone head 2 when the second grinding surface Gb abuts the reference member S;
Second position detection means 6 for detecting relative position in the axial direction
and a diameter dimension W D at the top of the grinding wheel G is calculated based on information on the relative positions of the grinding wheel head 2 and the reference member S detected by the first and second position detection means 4 and 6. A grindstone diameter calculating means 5 is provided for calculating and outputting a grindstone diameter.
＜作用＞
砥石交換時において、当接手段３を用いて砥石
車Ｇの第１研削面Ga、第２研削面Gbのそれぞれ
を工作物テーブル１上の基準部材Ｓに当接させ、
第１研削面Gaを基準部材Ｓに当接させた時の基
準部材Ｓと砥石台２の回転軸線上の基準点との第
１軸方向の相対位置を第１位置検出手段４によつ
て検出し、第２研削面Gbを基準部材Ｓに当接さ
せた時の基準部材Ｓと砥石台２の回転軸線上の基
準点との第２軸方向の相対位置を第２位置検出手
段６によつて検出する。そして、演算手段５は、
第１、第２位置検出手段４，６によつて検出され
た砥石台２と基準部材Ｓの相対位置データに基づ
き、第１研削面Ga、第２研削面Gbの交差する頂
部Gpの径寸法WDを演算する。<Operation> When replacing the grinding wheel, the first grinding surface Ga and the second grinding surface Gb of the grinding wheel G are brought into contact with the reference member S on the workpiece table 1 using the contact means 3,
When the first grinding surface Ga is brought into contact with the reference member S, the relative position in the first axis direction between the reference member S and the reference point on the rotation axis of the grindstone head 2 is detected by the first position detection means 4 Then, when the second grinding surface Gb is brought into contact with the reference member S, the relative position in the second axis direction between the reference member S and the reference point on the rotation axis of the grindstone head 2 is detected by the second position detection means 6. detection. Then, the calculation means 5
Based on the relative position data of the grindstone head 2 and the reference member S detected by the first and second position detection means 4 and 6, the diameter dimension of the top Gp where the first grinding surface Ga and the second grinding surface Gb intersect. Calculate W D.
＜実施例＞
以下本発明の実施例を図面に基づいて説明す
る。第２図において、１０は数値制御研削盤のベ
ツドを示し、このベツド１０上には主軸台１１と
心押台１２を設置した工作物テーブル１３が載置
されている。主軸台１１と心押台１２との間には
工作物Ｗが支持され、図略の主軸駆動モータに連
結された主軸１５の回転によつて回転駆動される
ようになつている。前記工作物テーブル１３は図
略の送りねじ機構を介してサーボモータ１６に連
結され、主軸軸線Osと平行なＺ軸方向へ移動さ
れるようになつている。なお１４は工作物テーブ
ル１３が原位置に位置したことを検出するＺ軸原
点検出器である。<Examples> Examples of the present invention will be described below based on the drawings. In FIG. 2, reference numeral 10 indicates a bed of a numerically controlled grinding machine, and a workpiece table 13 on which a headstock 11 and a tailstock 12 are installed is placed on the bed 10. A workpiece W is supported between the headstock 11 and the tailstock 12, and is rotationally driven by the rotation of a main shaft 15 connected to a main shaft drive motor (not shown). The workpiece table 13 is connected to a servo motor 16 via a feed screw mechanism (not shown), and is adapted to be moved in the Z-axis direction parallel to the main spindle axis Os. Note that 14 is a Z-axis origin detector for detecting that the workpiece table 13 is located at its original position.
一方、前記ベツド１０の後方には、砥石台１７
が工作物Ｗの軸線と直交するＸ軸方向に進退可能
に装架され、この砥石台１７はサーボモータ１８
に連結された図略の送りねじを介して送り制御さ
れるようになつている。そして、砥石台１７に
は、主軸軸線Osと平行な第１研削面Gaと、この
第１研削面Gaと直交する第２研削面Gbとを有す
るアンギユラ形の砥石車Ｇが主軸軸線Osに対し
て斜めに軸承された砥石軸１９を介して回転可能
に軸承され、図略の砥石駆動モータにて回転駆動
されるようになつている。なお、前記ベツド１０
の後端には、砥石台１７が原位置まで後退された
ことを検出するＸ軸原点検出器２１が設置されて
いる。 On the other hand, behind the bed 10, a grindstone stand 17 is provided.
is mounted so that it can advance and retreat in the X-axis direction perpendicular to the axis of the workpiece W, and this grindstone head 17 is driven by a servo motor 18.
The feed is controlled via an unillustrated feed screw connected to. The grinding wheel head 17 has an angular-shaped grinding wheel G having a first grinding surface Ga parallel to the spindle axis Os and a second grinding surface Gb orthogonal to the first grinding surface Ga. The grindstone shaft 19 is rotatably supported via a grindstone shaft 19 that is obliquely supported, and is rotationally driven by a grindstone drive motor (not shown). Note that the bed 10
At the rear end, an X-axis origin detector 21 is installed to detect when the grindstone head 17 has been retreated to its original position.
また、前記心押台１２の砥石台１７側の側面に
は、ダイヤモンド等から成る修正工具DTがブラ
ケツト２２を介して取付けられ、この修正工具
DTを用いて砥石車Ｇの修正を行うようになつて
いるとともに、主軸台１１の砥石台１７側の側面
には、主軸軸線Osと平行な第１基準面Saと、こ
れと直交する第２基準面Sbとを形成した基準部
材Ｓが取付けられている。 Further, a correction tool DT made of diamond or the like is attached to the side surface of the tailstock 12 on the side of the grindstone 17 via a bracket 22.
The grinding wheel G is corrected using the DT, and the side surface of the headstock 11 on the side of the grinding wheel G is provided with a first reference plane Sa parallel to the spindle axis Os and a second reference plane Sa perpendicular to this. A reference member S having a reference surface Sb is attached.
第３図は上記構成の研削盤を制御する制御回路
を示し、同図において４０は前記サーボモータ１
６，１８をそれぞれ駆動する駆動回路４１，４２
へパルスを分配して工作物Ｗの加工と砥石車Ｇの
修正を制御する数値制御装置で、この数値制御装
置４０は演算処理装置４５、メモリＭならびに演
算処理装置４５に接続されたインタフエイス４
６，４７によつて構成さている。そして、インタ
フエイス４６にはデータ書込装置５０と、加工の
開始等を指令する指令スイツチRCSからMSZと、
手動パルス発生器５１と、原点検出器１４，２１
とが接続され、インタフエイス４７の出力は駆動
回路４１，４２に接続されている。 FIG. 3 shows a control circuit for controlling the grinding machine configured as described above, in which 40 indicates the servo motor 1.
Drive circuits 41 and 42 that drive 6 and 18, respectively.
This numerical control device 40 controls the machining of the workpiece W and the correction of the grinding wheel G by distributing pulses to the arithmetic processing device 45, the memory M, and the interface 4 connected to the arithmetic processing device 45.
6,47. The interface 46 includes a data writing device 50, a command switch RCS to MSZ for instructing the start of machining, etc.
Manual pulse generator 51 and origin detectors 14 and 21
The output of the interface 47 is connected to the drive circuits 41 and 42.
前記メモリＭには砥石車Ｇの第１研削面Ga、
第２研削面GbのＸ，Ｚ軸方向現在位置Xc，Zcを
記憶する現在位置レジスタRX，RZおよび砥石径
記憶レジスタGDRが形成されている他、NCプロ
グラムエリアNCPA、制御データエリアCDAが
設けられており、NCプログラムエリアNCPAに
は、工作物研削サイクル用のNCプログラムと砥
石修正用のNCプログラムとがデータ書込装置５
０を用いて書込まれている。また、制御データエ
リアCDAには、砥石台１７を原位置に移動させ
た状態における砥石台１７と基準部材Ｓとの位置
関係を示すデータが記憶されている。 The memory M stores the first grinding surface Ga of the grinding wheel G,
In addition to the current position registers RX and RZ that store the current positions Xc and Zc of the second grinding surface Gb in the X and Z axis directions and the grindstone diameter storage register GDR, an NC program area NCPA and a control data area CDA are provided. In the NC program area NCPA, the NC program for the workpiece grinding cycle and the NC program for grinding wheel correction are stored in the data writing device 5.
It is written using 0. Furthermore, data indicating the positional relationship between the grindstone head 17 and the reference member S in a state where the whetstone head 17 has been moved to the original position is stored in the control data area CDA.
すなわち、第４図に示されるように、砥石車Ｇ
の中心軸線Ogと砥石台１７の側面との交点が砥
石台１７を位置を表わす砥石台基準点Pgとして
設定されており、前記制御データエリアCDAに
は、砥石台１７が原位置に位置した状態における
前記砥石台基準点Pgと基準部材Ｓの第１基準面
Saとの間のＸ軸方向の離間距離Mxと、砥石台基
準点Pgと第２基準面Sbとの間のＺ軸方向の離間
距離Mzとが記憶されている。また、この制御デ
ータエリアCDAには、主軸軸線Osから基準部材
Ｓの第１基準面SaまでのＸ軸方向距離Lxおよび、
砥石台基準点Pgに対する第１研削面GaのＸ軸方
向ずれ量Wxと第２研削面GbのＺ軸方向ずれ量
Wzとが記憶されている。 That is, as shown in FIG.
The intersection point between the central axis Og and the side surface of the grindstone 17 is set as the grindstone reference point Pg that indicates the position of the grindstone 17, and the control data area CDA shows the state in which the grindstone 17 is at its original position. The grindstone reference point Pg and the first reference plane of the reference member S at
A separation distance Mx in the X-axis direction between the wheel head reference point Pg and the second reference surface Sb and a separation distance Mz in the Z-axis direction between the grindstone reference point Pg and the second reference surface Sb are stored. This control data area CDA also contains the distance Lx in the X-axis direction from the spindle axis Os to the first reference surface Sa of the reference member S, and
The amount of deviation Wx of the first grinding surface Ga in the X-axis direction and the amount of deviation of the second grinding surface Gb in the Z-axis direction with respect to the grindstone reference point Pg
Wz is memorized.
次に上記構成の数値制御研削盤における砥石交
換時の動作について説明する。 Next, the operation when replacing the grindstone in the numerically controlled grinding machine having the above configuration will be explained.
砥石車Ｇを交換した場合には、砥石径WDが不
明であるため、下記の動作によつて砥石径WDを
検出する。 When the grinding wheel G is replaced, since the grinding wheel diameter W D is unknown, the grinding wheel diameter W D is detected by the following operation.
作業車は新しい砥石車Ｇを取付けた後で、砥石
交換原位置復帰指令スイツチERCSを操作する。
これに応答して演算処理装置４５は第７図に示す
プログラムを実行し、砥石台１７と工作物テーブ
ル１３を原位置に移動させるべく、各原点検出器
２１，１４が作動するまでＸ軸とＺ軸にパルス分
配を行つた後６０，６１、現在位置レジスタ
RX，RZにMx＋Lx，Mzの値をセツトする。 After installing the new grinding wheel G on the work vehicle, operate the grinding wheel exchange original position return command switch ERCS.
In response to this, the arithmetic processing unit 45 executes the program shown in FIG. After performing pulse distribution on the Z axis, 60, 61, current position register
Set the values of Mx + Lx and Mz in RX and RZ.
なお、Mx，Lx，Mzはそれぞれ、第４図に示
されるように工作物テーブル１３と砥石台１７を
原位置に復帰させた状態での第１基準面Saから
砥石台基準点PgまでのＸ軸方向距離、第１基準
面Saの主軸軸線Osからの距離、第２基準面Sbか
ら砥石台基準点PgまでのＺ軸方向距離を示す。 Note that Mx, Lx, and Mz are respectively the X from the first reference plane Sa to the grindstone reference point Pg when the workpiece table 13 and the grindstone 17 are returned to their original positions, as shown in FIG. The distance in the axial direction, the distance from the first reference surface Sa from the spindle axis Os, and the distance in the Z-axis direction from the second reference surface Sb to the grindstone reference point Pg are shown.
この後、作業者は手動パルス発生器５１を用い
て工作物テーブル１３と砥石台１７を移動させて
回転が停止された状態にある砥石車Ｇの第１研削
面Gaを基準部材Ｓの第１基準面Saに接触させ、
位置記憶スイツチMSXを押圧する。なお、メモ
リＭには、手動パルス発生器５１からの指令に基
づき、Ｘ軸とＺ軸に選択的にパルスを分配するプ
ログラムが記憶されている。 Thereafter, the operator uses the manual pulse generator 51 to move the workpiece table 13 and the grinding wheel head 17 so that the first grinding surface Ga of the grinding wheel G, which is in a state where the rotation is stopped, is placed on the first grinding surface Ga of the reference member S. Contact the reference surface Sa,
Press the position memory switch MSX. Note that the memory M stores a program for selectively distributing pulses to the X-axis and the Z-axis based on commands from the manual pulse generator 51.
第１研削面Gaが砥石台基準点Pgに対してずれ
ていない場合には、第１研削面Gaを第１基準面
Saに接触させた時点で現在位置レジスタRXの内
容がLxとなるが第１研削面Gaが砥石台基準点Pg
に対してずれ量Wxだけずれている場合には、
RXの内容がLx＋Wxとなる。したがつて、記憶
スイツチMSXが押されると、演算処理装置４５
はRXの内容からLxを減じてＸ軸方向のずれ量
Wxを算出し、これを制御データエリアCDAに記
憶する６４。 If the first grinding surface Ga is not shifted from the grinding wheel head reference point Pg, the first grinding surface Ga is set to the first reference point Pg.
When Sa is brought into contact, the contents of the current position register RX become Lx, but the first grinding surface Ga is the reference point of the grinding wheel head Pg
If there is a deviation Wx from the
The contents of RX become Lx + Wx. Therefore, when the memory switch MSX is pressed, the arithmetic processing unit 45
is the amount of deviation in the X-axis direction by subtracting Lx from the contents of RX
Calculate Wx and store it in the control data area CDA 64.
また、これに続いて作業者は手動パルス発生器
５１の操作により砥石車Ｇの第２研削面Gbを基
準部材Ｓの第２基準面Sbに接触させ、位置記憶
スイツチMSZを押圧する。 Subsequently, the operator operates the manual pulse generator 51 to bring the second grinding surface Gb of the grinding wheel G into contact with the second reference surface Sb of the reference member S, and presses the position memory switch MSZ.
現在位置レジスタRZは上記したように、原位
置復帰時においてMzがセツトされているため、
第２研削面GbのＺ軸方向位置が砥石台基準点Pg
に完全に一致しているとすれば、第２研削面Gb
を第２基準面Sbに当接させた時、現在位置レジ
スタRZの値が零となるが、第２研削面Gbが砥石
台基準点Pgに対してずれ量Wzだけずれている場
合には、原位置からの移動量がMz−Wzに減少し
て現在位置レジスタRZの内容が第２研削面Gbの
ずれ量Wzに等しくなる。 As mentioned above, the current position register RZ is set to Mz when returning to the home position, so
The position of the second grinding surface Gb in the Z-axis direction is the grindstone reference point Pg
If it completely matches, the second grinding surface Gb
When it comes into contact with the second reference surface Sb, the value of the current position register RZ becomes zero, but if the second grinding surface Gb deviates from the grinding wheel head reference point Pg by the amount of deviation Wz, The amount of movement from the original position decreases to Mz - Wz, and the contents of the current position register RZ become equal to the deviation amount Wz of the second grinding surface Gb.
そして、この時点で位置記憶スイツチMSZが
押圧されると、演算処理装置４５は現在位置レジ
スタRZの内容を第２研削面GbのＺ軸方向ずれ量
Wzとして制御データエリアCDAに記憶する６
６。 Then, when the position memory switch MSZ is pressed at this point, the arithmetic processing unit 45 stores the contents of the current position register RZ as the amount of deviation in the Z-axis direction of the second grinding surface Gb.
Store in control data area CDA as Wz6
6.
さらに、これに続いて砥石径記憶スイツチ
GDMが押圧されると、以下に述べる一連の演算
によつて砥石径WDを算出してメモリＭの砥石径
を記憶レジスタGDRに記憶する。 Furthermore, following this, the grindstone diameter memory switch
When GDM is pressed, the grindstone diameter W D is calculated by a series of calculations described below, and the grindstone diameter in the memory M is stored in the storage register GDR.
すなわち、演算処理装置４５は前述した動作に
より算出したずれ量Wx，Wzのデータに基づき、
まず最初に第６図に示されるように、前記砥石台
基準点Pgを通りＸ軸と平行な線分と頂点Gpを通
る平面との交点Paと前記砥石台基準点Pgとの間
のＸ軸方向距離を下記(1)によつて演算する６８。 That is, based on the data of the deviation amounts Wx and Wz calculated by the above-described operation, the arithmetic processing unit 45 calculates
First, as shown in FIG. 6, the X-axis is located between the intersection point Pa of a line passing through the grinding wheel head reference point Pg and parallel to the X axis and the plane passing through the apex Gp, and the grinding wheel head reference point Pg. The direction distance is calculated by the following (1)68.
Ｂ＝Wx−Wz・tanθ ……(1)
なお上式において、θは砥石車Ｇの頂点Gpを
通る平面と第１研削面Gaとのなす角である。 B=Wx−Wz·tanθ (1) In the above equation, θ is the angle between the plane passing through the apex Gp of the grinding wheel G and the first grinding surface Ga.
また、これに続いて砥石車Ｇの回転軸線Ogと
頂点Gpを通る平面との交点Pbと前記砥石台基準
点Pgとの間のＺ軸方向距離QzおよびＸ軸方向距
離Qxを下記(2)，(3)式によつて算出する６９。 Further, following this, the distance Qz in the Z-axis direction and the distance Qx in the X-axis direction between the intersection point Pb of the rotational axis Og of the grinding wheel G and the plane passing through the apex Gp and the grinding wheel head reference point Pg are calculated as follows (2) , calculated using equation (3)69.
Qz＝（Ｂ・tanθ）／｛（tanθ）2＋１｝ ……(2)
Qx＝Ｂ／｛（tanθ）2＋１｝ ……(3)
そして、上記の演算によつて得られた砥石台基
準点Pgと交点Pbとの間の離間距離Qz，Qxと、
前記のずれ量Wx、Wzのデータとに基づき、下
記(4)式を用いて砥石径WDを演算し７０、これを
メモリＭに記憶する７１。 Qz=(B・tanθ)/{(tanθ) 2 +1} ...(2) Qx=B/{(tanθ) 2 +1} ...(3) Then, the grindstone standard obtained by the above calculation The separation distance Qz, Qx between the point Pg and the intersection Pb,
Based on the data of the deviation amounts Wx and Wz, a grindstone diameter W D is calculated using the following equation (4) 70, and this is stored in the memory M 71.
WD＝√（＋）2＋（−）2×２ ……(4)
これにより、新たに取付けられた砥石車Ｇの外
径寸法を正確に測定してメモリＭに記憶すること
ができる。W D =√(+) 2 +(−) 2 ×2 (4) As a result, the outer diameter dimension of the newly installed grinding wheel G can be accurately measured and stored in the memory M.
そして、このメモリＭに記憶された砥石径WD
のデータは砥石修正が行われる度に、砥石修正に
基づく径の減少に応じて減算修正され、その修正
された砥石径WDに基づいて、砥石交換予報等の
制御が行われる。 Then, the grindstone diameter W D stored in this memory M
Each time the grinding wheel is corrected, the data is subtracted and corrected in accordance with the diameter reduction based on the grinding wheel correction, and control such as grinding wheel replacement forecast is performed based on the corrected grinding wheel diameter W D.
本発明においては、基準部材Ｓを用いて砥石台
１７上の砥石台基準点Pgに対する第１研削面
Ga、第２研削面Gbのずれ量Wx，Wzを求め、こ
れに基づいて頂部Gpの砥石径WDを演算している
ため、頂部Gpが回転軸線Ogと平行な方向にずれ
た砥石車Ｇを装着した場合でも、その砥石径WD
を正確に測定できる。 In the present invention, using the reference member S, the first grinding surface relative to the grindstone reference point Pg on the grindstone head 17 is
Ga, the amount of deviation Wx, Wz of the second grinding surface Gb is calculated, and the grinding wheel diameter W D of the top Gp is calculated based on this, so the grinding wheel G whose top Gp is deviated in the direction parallel to the rotation axis Og Even if the grinding wheel diameter W D
can be measured accurately.
なお、上記実施例においては、主軸台１１に取
付けた基準部材Ｓを用いて砥石径WDを検出して
いたが、主軸台１１に修正工具DTを取付け、第
８図に示すように、その頂部が基準部材Ｓを取付
けた場合におけるSaとSbの交点に位置するよう
にすれば、この修正工具DTの先端位置を基準と
して上記実施例と同じ演算式で砥石径WDを検出
できる。また、修正工具DTが心押台１２上にあ
る場合でも、第７図のステツプ６２において現在
位置レジスタRZに設定する値を修正工具DTの先
端と砥石台基準点Pgとの間のＺ軸方向距離の負
値とすればよい。 In the above embodiment, the grinding wheel diameter W D was detected using the reference member S attached to the headstock 11, but a correction tool DT was attached to the headstock 11, and as shown in FIG. If the top is located at the intersection of Sa and Sb when the reference member S is attached, the grindstone diameter W D can be detected using the same calculation formula as in the above embodiment using the tip position of the correction tool DT as a reference. Furthermore, even if the correction tool DT is on the tailstock 12, the value set in the current position register RZ in step 62 in FIG. It may be a negative value of distance.
＜発明の効果＞
以上述べたように本発明は、工作物テーブル上
に配設した基準部材を利用して砥石車の径を自動
測定するようにしたので、砥石交換時および砥石
寿命を求めたい時等において、砥石径を作業者が
手作業で測定する必要がなくなり、作業能率が大
幅に向上するとともに、作業者の熟練度に関係し
ない正確な砥石径の測定が行える利点がある。<Effects of the Invention> As described above, the present invention automatically measures the diameter of the grinding wheel using a reference member placed on the workpiece table. This eliminates the need for the worker to manually measure the diameter of the grindstone at times, etc., greatly improving work efficiency, and has the advantage that the diameter of the grindstone can be measured accurately regardless of the skill level of the worker.
また、本発明においては、アンギユラ砥石車の
一対の研削面のそれぞれを基準部材に当接させ、
当接時における砥石台の位置と工作物テーブルの
位置の両者を測定し、その両者の位置に基づいて
砥石径を演算するようにしたので、砥石車の頂部
の位置に拘わらずその砥石径を正確に測定でき
る。したがつて、頂部位置の異なる砥石車を装着
した場合でもその砥石径を正確に測定できる。従
つて、この砥石径を利用することにより、正確な
砥石寿命の計算や、砥石交換予測を行うことがで
きる利点がある。 Further, in the present invention, each of the pair of grinding surfaces of the angular grinding wheel is brought into contact with the reference member,
Since both the position of the grinding wheel head and the position of the workpiece table at the time of contact are measured and the diameter of the grinding wheel is calculated based on both positions, the diameter of the grinding wheel can be calculated regardless of the position of the top of the grinding wheel. Can be measured accurately. Therefore, even when a grinding wheel with a different top position is installed, the diameter of the grinding wheel can be accurately measured. Therefore, by using this grindstone diameter, there is an advantage that accurate calculation of the grindstone life and prediction of grindstone replacement can be performed.
第１図は本発明を明示するための全体構成図、
第２図〜第７図は本発明の実施例を示すもので、
第２図は数値制御研削盤の概略平面図、第３図は
第２図に示す研削盤を制御する制御回路のブロツ
ク図、第４図は原位置復帰状態での砥石車Ｇと基
準部材Ｓとの位置関係を示す図、第５図は第４図
におけるずれ量Wx，Wzを検出する場合におけ
る砥石車Ｇと基準部材Ｓの位置関係を示す図、第
６図は第５図におけるずれ量Wx，Wzから砥石
径WDを算出する方法を示す図、第７図は第３図
における演算処理装置４５の動作を示すフローチ
ヤート、第８図は本発明の変形例を示す図であ
る。
１，１３……工作物テーブル、２，１７……砥
石台、１６，１８……サーボモータ、４０……数
値制御装置、４１，４２……駆動回路、４５……
演算処理装置、５１……手動パルス発生器、Ｇ…
…砥石車、Ga……第１研削面、Gb……第２研削
面、Ｓ……基準部材、Sa……第１基準面、Sb…
…第２基準面、WD……砥石径。
FIG. 1 is an overall configuration diagram for clearly demonstrating the present invention.
2 to 7 show embodiments of the present invention,
Fig. 2 is a schematic plan view of the numerically controlled grinding machine, Fig. 3 is a block diagram of the control circuit that controls the grinding machine shown in Fig. 2, and Fig. 4 shows the grinding wheel G and reference member S in the state of returning to their original positions. Figure 5 is a diagram showing the positional relationship between the grinding wheel G and reference member S when detecting the deviation amounts Wx and Wz in Figure 4, and Figure 6 is the deviation amount in Figure 5. FIG. 7 is a flowchart showing the operation of the arithmetic processing unit 45 in FIG. 3, and FIG. 8 is a diagram showing a modification of the present invention. 1, 13... Workpiece table, 2, 17... Grindstone head, 16, 18... Servo motor, 40... Numerical control device, 41, 42... Drive circuit, 45...
Arithmetic processing unit, 51... Manual pulse generator, G...
...Grinding wheel, Ga...First grinding surface, Gb...Second grinding surface, S...Reference member, Sa...First reference surface, Sb...
...Second reference plane, W D ...Whetstone diameter.
Claims (1)
る第２研削面とを有し回転軸線が主軸軸線に対し
て斜交するアンギユラ砥石車を砥石台に軸承し、
この砥石台の前記主軸軸線と交差する第１軸方向
の移動と工作物テーブルの前記主軸軸線と平行な
第２軸方向の移動によつて工作物加工を行う数値
制御研削盤において、前記第１研削面および第２
研削面の係合可能な基準部材を前記工作物テーブ
ル上に配設するとともに、前記工作物テーブルと
砥石台との間の相対移動により前記第１、第２研
削面を前記基準部材にそれぞれ当接させる当接手
段と、前記第１研削面が前記基準部材に当接した
時における前記基準部材と前記砥石台の回転軸線
上の基準点との前記第１軸方向の相対位置を検出
する第１位置検出手段と、前記第２研削面が前記
基準部材に当接した時における前記基準部材と前
記砥石台の回転軸線上の基準点との前記第２軸方
向の相対位置を検出する第２位置検出手段と、前
記第１、第２位置検出手段によつて検出された前
記砥石台と前記基準部材の相対位置の情報に基づ
いて前記砥石車の頂部における径寸法を演算して
出力する砥石径演算手段とを設けたことを特徴と
する数値制御研削盤における砥石径測定装置。1. An angular grinding wheel having a first grinding surface parallel to the spindle axis and a second grinding surface perpendicular thereto and whose rotational axis is oblique to the spindle axis is supported on a grindstone head;
In this numerically controlled grinding machine, a workpiece is machined by moving the grinding wheel head in a first axis direction intersecting the spindle axis and moving the workpiece table in a second axis direction parallel to the spindle axis. Grinding surface and second
A reference member with which the grinding surface can engage is disposed on the workpiece table, and the first and second grinding surfaces are brought into contact with the reference member, respectively, by relative movement between the workpiece table and the grindstone head. abutting means for bringing the first grinding surface into contact with the reference member; and a first member for detecting a relative position in the first axis direction between the reference member and a reference point on the rotation axis of the grindstone head when the first grinding surface contacts the reference member. 1 position detection means, and a second position detecting means for detecting a relative position in the second axis direction between the reference member and a reference point on the rotation axis of the grindstone head when the second grinding surface abuts the reference member. A grinding wheel that calculates and outputs a diameter dimension at the top of the grinding wheel based on information on the relative positions of the grindstone head and the reference member detected by the position detection means and the first and second position detection means. A grinding wheel diameter measuring device for a numerically controlled grinding machine, characterized in that it is provided with a diameter calculation means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59105387A JPS60249573A (en) | 1984-05-23 | 1984-05-23 | Grinding wheel diameter measuring device for numerical control grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59105387A JPS60249573A (en) | 1984-05-23 | 1984-05-23 | Grinding wheel diameter measuring device for numerical control grinding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60249573A JPS60249573A (en) | 1985-12-10 |
| JPH0468103B2 true JPH0468103B2 (en) | 1992-10-30 |
Family
ID=14406241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59105387A Granted JPS60249573A (en) | 1984-05-23 | 1984-05-23 | Grinding wheel diameter measuring device for numerical control grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60249573A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH064220B2 (en) * | 1986-10-07 | 1994-01-19 | 株式会社新潟鐵工所 | Automatic grindstone size measurement method in numerical control grinder |
| JPS63109977A (en) * | 1986-10-24 | 1988-05-14 | Niigata Eng Co Ltd | Automatic grinding wheel dimension measuring device for numerically controlled grinder |
| JP5440159B2 (en) * | 2009-12-25 | 2014-03-12 | 株式会社ジェイテクト | Workpiece grinding method and grinding machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58132460A (en) * | 1982-01-29 | 1983-08-06 | Toyoda Mach Works Ltd | Numerical controller for angular grinder |
-
1984
- 1984-05-23 JP JP59105387A patent/JPS60249573A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58132460A (en) * | 1982-01-29 | 1983-08-06 | Toyoda Mach Works Ltd | Numerical controller for angular grinder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60249573A (en) | 1985-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4281385A (en) | Control system for a machine tool | |
| US6640676B2 (en) | Tool presetter and tool offset amount calculation method | |
| JPH0523909B2 (en) | ||
| JPS58132460A (en) | Numerical controller for angular grinder | |
| US4584795A (en) | Numerical control grinding machine for grinding a taper portion of a workpiece | |
| EP0161674B1 (en) | Numerical control grinding machine | |
| JPS60249571A (en) | Feed controller for numerical control grinding machine | |
| JPH0545968B2 (en) | ||
| JPS61146454A (en) | Method of positioning work of nc control machine and nc control machine for executing said method | |
| JPS61226261A (en) | Numerically controlled grinding machine | |
| JPH04348869A (en) | Correction device for angular grinding wheel | |
| JPH0468103B2 (en) | ||
| JPS60238258A (en) | Automatic centering device | |
| JP3283278B2 (en) | Automatic lathe | |
| JPH081405A (en) | Device and method for detecting lost motion | |
| JPH08197384A (en) | Tip position correction device of rotating tool | |
| JPH10277889A (en) | Cutter tip position measuring device | |
| JPH0215345B2 (en) | ||
| JPS60177848A (en) | Correction of original point in nc machine tool | |
| JPH0114882Y2 (en) | ||
| JP2597219B2 (en) | NC grinding machine | |
| JPH0325301B2 (en) | ||
| JPS60242966A (en) | Numerically controlled grinding machine | |
| JPS6374555A (en) | Numerically controlled machine tool having measuring function | |
| JPH02198767A (en) | Grinding machine equipped with tool length setting function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |